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Network-based crime has been increasing in both extent and severity and network-based forensics encapsulates an essential part of legal surveillance. A key network forensics tool is trace back, which can be used to identify true sources of suspects. Both accuracy and secrecy are essential attributes of a successful forensic trace back. In this paper, we present a class of hopping based spread-spectrum...
This paper presents a submarine tracking technique by fusing multiple direction of arrival (DOA), time difference of arrival (TDOA), and target frequency measurements via an extended Kalman filter bank (EKFB). These measurements are collected by two sonobuoys each containing a wideband sonar-sensor and a narrowband sonar-sensor. In the fusion process, the area that the target may be located in is...
The contact lens problem in tracking has severe measurement nonlinearity that will cause consistency problems and large errors for existing nonlinear filtering techniques including the EKF, the UKF and the particle filter. In our previous work, the proposed measurement covariance adaptive (MCA) extended Kalman filter (MCAEKF) was shown to be consistent and have superior tracking accuracy. The only...
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